Brick-kiln



(No Model.)

W. RENNIE.

BRICK KILN.

2 Sheets-She@in 1.

Patented July 29, 1.390.

l fr",

2 Sheets-Sheet 2. W. RENNIE.

BRICK KILN.

(No Model.)

105433,368. Patented July 29, 1890.

V/////// IW UNITnD STATES TILLIAM RENNIE, OF

nur rrIcE.

SING SING, NFV YORK.

SPECIFICATION forming part of Letters Patent N o. 433,368, dated July29, 1890. Application filed February 3, 1890. Serial No. 339,101. (Nomodel.)

To all whom t may concern:

Be it known that I, WILLIAM RENNIE, a citizen of the United States,residing at Sing Sing, in the county of Vestchester and State of NewYork, have invented certain new and useful Improvements in Kilns; and Ido hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which -it appertains to make and use the same.

My invention relates to improvements in brick-kilns; and it has for itsobject to so improve the construction of the kiln that the iiame andsmoke will be spread in the kiln and the gases in the furnace completelyconsumed, the bricks being thus properly burned without producing anysoft, pale, or overburned bricks.

The invention consists in certain novel features hereinafter describedand claimed.

In the accompanying drawings, which fully illustrate my invention,Figure l is a front elevation of my improved brick-kiln. Fig. 2 is atransvere vertical section. Fig. 3 is a horizontal section, and Fig. 4.is a sectional view taken at right angles to Fig. 2.

Referring to the drawings by letter, A designates the walls, which arebraced and strengthened by the brick-stays B and binding-plates in theusual manner, and C designates the crown-arch extending between the endsof the kiln, as clearly shown in Fig. 2.

The furnaces D are arranged along the ends of the kiln, and may be ofany desired number, according to the size of the kiln, and thefurnace-doors E are provided with rotary blowers or dampers F toregulate the draft.

On each side of each of the furnaces are formed in the walls theair-inlet tubes or passages G, which extend longitudinally through thewalls Il, built up between the furnaces and the bridge-walls I in rearof the fire-chambers, and extend inward to about the center of thebridge-walls, where they are provided with vertical branches J, throughwhich the heated air escapes to the floor of the kiln.

The floor of the kiln is arranged above the fire-chambers and thebridge-wall, and is supported by the walls Il, as shown. The idool' ot'the kiln is composed ot' alternate courses of tire clay and brick, whichare arranged to provide the air spaces or passages K to facilit-ate theentrance of the hot air into the kiln.

Peep-holes L are provided in the end walls of the kiln above thefurnaces, so that the progress of the burning process may be easilyascertained at all times, and chimneys M lead from the crown-arch to theouter air.

In practice the bricks are piled in the kiln on the floor of the same inthe usual manner, and fires are built in the furnaces, as will bereadily understood. The Haines and products of combustion will passinward over the bridge-wall and under the oor of the kiln and will passupward through the floor to the bricks, so as to burn the same. Freshand pass through the same to the branches J, from which they escape intothe space below the floor of the kiln, where they will be raised to ahigh temperature and all gases ignited and consumed. The floor of thekiln, it will 'be readily understood, will be heated to a high degree,so that the gases which may remain unconsumed will be burned on passingthrough the floor, and the quantity of fuel necessary to maintain theiire will be reduced to a minimum. It will be noticed that the flame andsmoke in passing through the door will be forced to takea circuitouscourse, and consequently, will be spread out and caused tc act on allthe bricks equally.

Myimproved kiln is very simple in its construction, and its advantagesare thought to be obvious.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

The improved brick-kiln herein described and shown, consisting of theouter walls A, the crown-arch extending between the said walls, thechimneys leading from and through the crown-arch to the open air, thelongiair will enter through the inlet-passages GV tudinai Walls H,separating the furnaces, the vide a number of open spaces, substantiallybridge-Walls arranged between the Walls H, as and for the purposes setforth. the said Walls H and the bridge-Walls having In testimony whereofI affix 'my signature longitudinal passages leading from the outer inpresence of two Witnesses.

5 Walls to the centers of the bridge-Walls, and WILLIAM` RENNIE.

the door supported by the walls II and oom- Witnesses: posed ofsuccessive Courses of bricks having` JOHN PATTERSON, their ends andedges overlapping, so as to pro- JOHN RENNIE.

